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Knock-resistant and impact-resistant multi-level heterogeneous fiber preform composite material and preparation method thereof

A composite material and impact-resistant technology, which is applied in the field of materials to achieve the effects of saving cost, improving shear and tear resistance, and improving anti-explosion and impact resistance

Active Publication Date: 2021-01-01
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems encountered in the anti-explosion and anti-shock aspects of buildings and equipment in the prior art, the present invention provides an anti-explosion and anti-shock composite material with significant negative Poisson's ratio effect and its preparation method

Method used

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  • Knock-resistant and impact-resistant multi-level heterogeneous fiber preform composite material and preparation method thereof
  • Knock-resistant and impact-resistant multi-level heterogeneous fiber preform composite material and preparation method thereof
  • Knock-resistant and impact-resistant multi-level heterogeneous fiber preform composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The anti-explosion and impact-resistant composite material includes a base material and an anti-explosion and impact-resistant coating covering the base material. The substrate is concrete. The anti-knock and impact-resistant coating is formed by curing the coating applied on the substrate, and the coating is an epoxy resin that adds hydroxylated graphene and is fully dispersed; the weight of the hydroxylated graphene in the coating is The score is 0.4%. Two layers of parallel heterogeneous fiber preforms are arranged in the anti-explosion and anti-impact coating. The projection angle of the multi-level heterogeneous fibers between the adjacent layers of the two-level heterogeneous fiber preforms is 5 projections. The included angle between the plane where each layer of secondary heterogeneous fiber preform is located and the direction of the impact load resisted by the coating is 60°. The interlayer distance between adjacent secondary heterogeneous fiber preforms is...

Embodiment 2

[0038] The anti-explosion and impact-resistant composite material includes a base material and an anti-explosion and impact-resistant coating covering the base material. The substrate is ceramic. The anti-knock and impact-resistant coating is formed by curing the coating applied on the base material, and the coating is polyurea with hydroxylated graphene added and fully dispersed; the weight fraction of the hydroxylated graphene in the coating is 0.5%. Three layers of three-level heterogeneous fiber preforms arranged in parallel are arranged in the anti-explosion and anti-impact coating. The projection angle of the multi-level heterogeneous fibers between adjacent layers of three-level heterogeneous fiber preforms is 15°. The included angle between the plane where the three-level heterogeneous fiber preform of each layer is located and the direction of the impact load resisted by the coating is 46°. The interlayer distance between the adjacent tertiary heterogeneous fiber p...

Embodiment 3

[0048] The anti-explosion and impact-resistant composite material includes a base material and an anti-explosion and impact-resistant coating covering the base material. The base material is low carbon steel. The anti-knock and impact-resistant coating is formed by curing the coating coated on the substrate, and the coating is polyurethane that is fully dispersed by adding hydroxylated graphene; the weight fraction of the hydroxylated graphene in the coating is 0.8%. Four layers of four-level heterogeneous fiber preforms arranged in parallel are arranged in the anti-explosion and anti-impact coating. The projected angle of the multi-level heterogeneous fibers between the adjacent four-level heterogeneous fiber preforms of each layer is 35°. The angle between the plane where the four-level heterogeneous fiber preform of each layer is located and the direction of the impact load resisted by the coating is 90°. The layer spacing between adjacent four-level heterogeneous fiber ...

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Abstract

The invention provides an anti-explosion and anti-impact composite material with significant negative Poisson's ratio effect and a preparation method thereof. The anti-explosion and impact-resistant composite material includes a base material and an anti-explosion and impact-resistant coating covering the base material. The anti-explosion and anti-impact coating is formed by curing the paint coated on the substrate; the anti-explosion and anti-impact coating is provided with multi-level heterogeneous fiber prefabricated bodies arranged in parallel in multiple layers. The projection angle of the multi-level heterogeneous fibers between adjacent layers of multi-level heterogeneous fiber preforms is 5°-90°. The included angle between the plane where the layers of multi-level heterogeneous fiber preforms are located and the direction of the impact load resisted by the coating is 5°-90°. The interlayer distance between adjacent multi-level heterogeneous fiber preforms is 2mm-20mm. The damping performance, tear resistance performance, tensile performance, and energy consumption and energy absorption performance of the anti-explosion and impact-resistant composite material are all greatly improved, and can effectively prevent material damage from causing fragments to splash, reducing secondary damage to personnel and structures .

Description

technical field [0001] The invention belongs to the field of materials, and relates to an anti-explosion and anti-impact composite material and a preparation method thereof, in particular to an anti-explosion and anti-impact composite material based on a multi-level heterogeneous fiber prefabricated body and a preparation method thereof. Background technique [0002] In recent years, frequent explosion accidents at home and abroad have caused serious threats to buildings, equipment and human life and property. The reason why explosion accidents can cause huge loss of life and property is mainly because the occurrence time is short and the impact load is very large, so it is impossible to take effective countermeasures to reduce the damage. Generally speaking, when an explosion occurs, the energy shock will first cause damage to the units around the center of the explosion; secondly, the high-speed fragments and shock waves produced by the explosion will cause more serious da...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B13/14B32B9/00B32B9/04B32B15/14B32B15/18B32B27/12B32B27/30B32B17/12B32B27/02B32B27/34B32B27/36B32B27/28B32B27/32B32B17/02B32B33/00
CPCB32B5/02B32B13/14B32B9/005B32B9/047B32B15/14B32B15/18B32B27/12B32B27/302B32B17/067B32B2260/021B32B2260/046B32B2262/0261B32B2262/0253B32B2262/103B32B2262/106B32B2262/0276B32B2262/101B32B2262/10B32B2307/558B32B2307/5825B32B2571/00B32B2419/00B32B5/028B32B2262/0223B32B2262/0292B32B2262/04
Inventor 马衍轩徐亚茜李梦瑶于霞宋晓辉段玉莹马巧玲付佳婷
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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